Interdental brush handle



FIG. 1 is a perspective view of an interdental brush handle showing our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear end view thereof; and,

FIG. 7 is a front end view thereof.

The broken lines in Figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a interdental brush handle, as shown. 